Plaster base



Jan. 1,V 1.929.

PLASTER BASE i Filed June 30. 1922,

Patented Jan. l, 1929.

UNITED s'mras www PATENr .or-Fica WALTER H. FAIRCHIIiD, 0F CHICAGO, ILLINOIS, ASSIGNOR T0 MID-WEST BOX? COM- PANY, ANDERSON, INDIANA, A CORPORATION OF INDIANA.

PLASTER BASE.

Application filed June 30, 1922. Serial No. 571,951.

The invention relates to plaster base and. its object^` is to provide an improved base which comprises a suitable sheeting and a reinforcement or lath on the face thereof to retainthe plaster or stucco.

Another object of the present invention is to provide plaster base in sheet-form and in which provision is made for continuity in the reinforcing effect of the lath or reinforcement. Other lobjects, will be apparent from the description.

The invention consists in the several novel features hereinafter set forth and more par*- ticularly defined by the claims at the conclusion hereof. Y

In the drawing: Fig. 1 is a perspective of a structure embodying the invention7 parts being shown in section. Fig. 2 is a horizontal section taken on line 2 2 of Fig. 1.- Fig. 3 is a vertical section taken on line 3 3 of Fig. 1. Fig. 4f is a perspective of a complete sheet of the plaster-base.

The invention is exemplified in a plasterbase comprising a backing sheet and a sheet of Woven wire lath or fabric consisting of longitudinal strips of wire 11 connected by strips of wire 12 woven obliquely back and Y forth between and .wrapped around strips 11 to form a suitable lath which is adapt/edv to retain plaster and to serve as a reinforcement for the wall when embedded in the plaster. The backing preferably comprises a back-liner or facing 7, a liner 8, an intermediate corrugated sheet 9, and a corrugated f sheet 10 secured to the front face of the liner 8. These liners and corrugated sheets are all formed of paper permanently secured together to form a stiff double-faced core rugated board with a corrugated plaster-face which is waterproofed by immersing it in a suitable solution of asphaltum after or before the liners and corrugated sheets have been united by a suitable adhesive.

The woven-wire fabric extends over the face of the backing formed by the corrugated sheet 10. The lath and backing are secured together before the base is applied to a building by staples 16 which extend through the backing and around the meshes of the fabric to secure the backing and fabric together for convenience in handling the base. The wire fabric is cut into sheets of sufficient area to cover the front face .of a. sheet of backing, to extend beyond one of its longitudinal margins as at 17, and to project slightly beyond its side-margins, as at 18. rlhe other longitudinal margin is substantially conterminous With the other longitudinal margin of the sheet. The sheets of the base are secured by staples 20 to studs or other suitable supports with their edges abiltting to form a complete covering for the wa l,As a result of providing each sheet of base with woven fabric, which extends beyond one longitudinal margin, the upper margin of the fabric on one sheet will overlap fthe lower margin of a vertically contiguous sheet when the sheets are secured to studsl or suit? able supports to form a Wall so that the sheets of fabric will collectively form a vertically continuous or uninterrupted reinforcement for the plaster or stucco. As a result of the projecting portions 18 at the side-margins of each sheet, the side margins will overlap at the joints between laterally contiguous sheets when they are secured in position on studs or other suitable supports inthe building of a wall and form horizontally continuous rel inforcement for they plaster or stucco. B providing sheets of the plaster` base wit these projecting marginal port-ions of lath or fabric, they will constitute a continuous reinforcement for plaster or stucco throughi out th-e area of a wall which will effectively prevent cracking of the plaster or Stucco at the joints between the sheets.

VlThe invention exemplifies a plaster-base in lsheet-form which is composed of a backingsheet and lath or fabric which will provide continuous reinforcement for the plaster or stucco applied to the backing; also one in which corrugated board is used as a backing l with reinforcement which becomes continuous in a wall and prevents disruption of the plaster and distortion of the backing) The invention is not to be understood as of a series o f wires extending in one direction and a second series'of wires interwoven with the first series and extending angularly with respect thereto, said lath being secured to and extending over the outer face of the sheet, the horizontal edges of said sheet being sutliciently wide to form seats against which the edges of similar bases are adapted to iabut,`the lath being extended so that wires of both series project beyond one of said horizontal edges to lap the abuttingl margin of one of the contiguous bases soas to form acontinuous wall structure. y

. 2. A plaster base composed of a waterproof substantially stili' and rectangular backing sheet, and a metallic lat-h consisting of a series vof wires extending in one direction and a second series of Wires interwoven with the first series and extending angularly with respect thereto, said lath being secured to and extending over the outer face of the sheet,

the vertical edges of said sheet being sulfia vsecond seriesof wires interwoven with the first series and extending angularly with respect thereto, said lath being secured to and extending over the outer face of the sheet,

the vertical edges of said sheet being sufficiently wide to form seats against which the edges of similar bases are adapted to abut, the lath being extended so that wires of both series project beyond both of said vertical edges to lap the margins of the lath and sheet of the contiguous'bases so as to form a continuous wall structure. a

4. A plaster base composed of a waterproof substantially stiE and rectangular backing sheet, and a metallic lath consisting of wires extending horizontally and Wires extending obliquely ,back and forth between said horizontal wires, said lath being secured to andl extending over the outer faceof the sheet, the vertical edges of the latter being sufficiently wide to form seats against which the edges of similar bases are adapted to abut, the oblique and horizontal wires ofthe lath being extended beyond both of said vertical edges to lap the margins of the lath and' sheet on the contiguous bases so as to-form a continuous wall structure.

Signed at Chicago, Illinois this 13th day of June, 1922. I

' WALTER H. FAIRCHILD. 

